. >> i was an obama mama and i was proud to claim that. >> reporter: not so much now? >> not so much. i'm not as enthused. >> do you think that romney could be that change? >> it could be a change, i just don't know if it would be for the better. >> and i would say no, i'm not better off right now than before. >> reporter: single dad omar lopez came to the u.s. from columbia 13 years ago. now a u.s. citizen, he owns a real estate business in las vegas. surviving one of the most depressed housing markets in the country. he supported president obama four years ago. >> we have to downsize. >> reporter: he too has grown disillusioned. >> one of governor romney's strong suits to you is the business side of you and he knows how to make money and our country needs to start making money. >> reporter: still, mitt romney has yet to win this businessman over. lopez wants specifics, which tax loopholes romney close? what will he do about immigration? >> you're holding out making a decision? >> yes, i'm still holding out, yes. >> reporter: that's why president obama was back in nev